Abstract
The efficacy of DNA vaccination for prevention of Chlamydia trachomatis infection was studied using the murine model of pneumonia induced by the mouse pneumonitis (MoPn) isolate of C. trachomatis. Intramuscular DNA immunization with two chlamydial genes, one that encodes the major outer-membrane protein (MOMP) and one that encodes a cytoplasmic enzyme (cytosine triphosphate [CTP] synthetase) were tested. The MOMP DNA vaccine but not the CTP synthetase DNA vaccine generated significant delayed-type hypersensitivity and serum antibodies to MoPn elementary bodies and reduced the peak growth of MoPn by >100-fold following lung challenge infection. MOMP DNA immunization suggests a new approach to vaccine development for prevention of human chlamydial infection.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Antibodies, Bacterial / analysis
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Antibodies, Bacterial / immunology
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Bacterial Outer Membrane Proteins / genetics*
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Bacterial Outer Membrane Proteins / immunology
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Carbon-Nitrogen Ligases / genetics
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Carbon-Nitrogen Ligases / immunology
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Chlamydia Infections / genetics
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Chlamydia Infections / immunology*
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Chlamydia Infections / prevention & control
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Chlamydia trachomatis / genetics
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Chlamydia trachomatis / immunology*
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Cloning, Molecular
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DNA, Bacterial / genetics
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Female
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Hypersensitivity, Delayed / immunology
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Mice
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Mice, Inbred BALB C
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Plasmids
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Pneumonia, Bacterial / genetics
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Pneumonia, Bacterial / immunology*
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Pneumonia, Bacterial / prevention & control
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Recombination, Genetic
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Vaccines, DNA / administration & dosage
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Vaccines, DNA / genetics
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Vaccines, DNA / immunology*
Substances
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Antibodies, Bacterial
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Bacterial Outer Membrane Proteins
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DNA, Bacterial
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Vaccines, DNA
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Carbon-Nitrogen Ligases
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CTP synthetase